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The leaf is connected to the stem by the leaf trace, which grows through the leaf gap. The leaf gap is a break in the vascular tissue of a stem above the point of attachment of a leaf trace. [1] It exists in the nodal region of the stem as a "gap in the continuity of the primary vascular cylinder above the level where a leaf trace diverges ...
Physical independence, such as completing tasks independently, is a main focus of the child at this time and children's individual personalities begin to form and develop. [ 28 ] The second plane (Ages 6–12): During this stage, children also focus on independence, but intellectual rather than physical. [ 28 ]
The clubmosses and horsetails have microphylls, as in all extant species there is only a single vascular trace in each leaf. [2] These leaves are narrow because the width of the blade is limited by the distance water can efficiently diffuse cell-to-cell from the central vascular strand to the margin of the leaf. [3]
whole leaf: Having the form of a thong or strap lyrate: lyratus: whole leaf: Shaped like a lyre, pinnately lobed leaf with an enlarged terminal lobe and smaller lateral lobes. See also List of lyrate plants. mucronate: mucronatus: leaf tip: Ending abruptly in a small sharp point as a continuation of the midrib [4] multifid: multi + findere ...
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"Cladode Anatomy and Leaf Trace Systems in New Zealand Brooms" (PDF). Transactions of the Royal Society of New Zealand. 80: 81– 96. ISSN 0035-9181. Wikidata Q89183321. Brenda F Slade (1953). "Somatic Chromosome Number of the New Zealand Broom Genera and a Discussion of Their Relationship" (PDF). Transactions of the Royal Society of New Zealand.
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Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.